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Table 2 Classifications of COPD groups using mMRC scores (n = 257)

From: Differences in classification of COPD group using COPD assessment test (CAT) or modified Medical Research Council (mMRC) dyspnea scores: a cross-sectional analyses

High risk 62 (24.1%) 80 (31.1%)
Low risk 97 (37.7%) 18 (7.0%)
mMRC 0-1 mMRC ≥ 2